/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.dubbo.samples.develop;

import org.apache.dubbo.config.annotation.DubboReference;

import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;

import java.util.concurrent.CompletableFuture;

/**
 * Asynchronous invoke demo
 */
@Component
public class AsyncTask implements CommandLineRunner {
    @DubboReference
    private AsyncService asyncService;

    @Override
    public void run(String... args) throws Exception {
        //调用异步接口
        CompletableFuture<String> future1 = asyncService.asyncInvoke("async call request1");
        future1.whenComplete((v, t) -> {
            if (t != null) {
                t.printStackTrace();
            } else {
                System.out.println("AsyncTask Response-1: " + v);
            }
        });
        //两次调用并非顺序返回
        CompletableFuture<String> future2 = asyncService.asyncInvoke("async call request2");
        future2.whenComplete((v, t) -> {
            if (t != null) {
                t.printStackTrace();
            } else {
                System.out.println("AsyncTask Response-2: " + v);
            }
        });
        //consumer异步调用
        CompletableFuture<String> future3 =  CompletableFuture.supplyAsync(() -> {
            return asyncService.invoke("invoke call request3");
        });
        future3.whenComplete((v, t) -> {
            if (t != null) {
                t.printStackTrace();
            } else {
                System.out.println("AsyncTask Response-3: " + v);
            }
        });

        System.out.println("AsyncTask Executed before response return.");
    }
}